Design for an interrupter unit for a switch assembly



FIG. 1 is a perspective view of an interrupter unit for a switchassembly showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof; and

FIG. 7 is a bottom plan view thereof.

The ornamental design for an interrupter unit for a switch assembly, asshown and described.